General description For use with the ProFoil lithium foil shaver, this replacement set includes 3X shaver nets and cutter heads to keep your shaver in optimal cutting condition. Regular cleaning of the shaver before installation is recommended for best results. Technical specifications Material: Metal Color: Gold Package Contents: 3 Pair x Knife Net, 3 Pair x Knife Head Measurement allowed error: +/- 1-3 cm Usage For maximum performance, it is advised to replace the blades every 6 months. The head and body assembly can be easily cleaned; simply remove the head cover, rinse, wash, and dry before reinserting it into the body.